Q. An electromagnetic wave going through vacuum is described by $E = E_{0}\sin{(kx - \omega t)};B = B_{0}\sin{(kx - \omega t)}$ Which of the following equation is true?
A) $E_{0}k = B_{0}\omega$
B) $E_{0}\omega = B_{0}k$
C) $E_{0}B_{0} = \omega k$
D) None of these
Explanation
(a) Use method of dimensions. Equating the dimensions of two sides we note the relation
(a)Is dimensionally correct
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.